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[NET]: Convert RTNL to mutex.

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This patch turns the RTNL from a semaphore to a new 2.6.16 mutex and
gets rid of some of the leftover legacy.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2006-03-20 22:23:58 -08:00 • committed by David S. Miller
parent 253aa11578
commit 6756ae4b4e
8 changed files with 51 additions and 51 deletions
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20
include/linux/rtnetlink.h
View file

@ -907,6 +907,7 @@ struct tcamsg
#ifdef __KERNEL__
#include <linux/config.h>
#include <linux/mutex.h>
extern size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size);
static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
@ -1038,24 +1039,17 @@ __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
extern struct semaphore rtnl_sem;
#define rtnl_shlock() down(&rtnl_sem)
#define rtnl_shlock_nowait() down_trylock(&rtnl_sem)
#define rtnl_shunlock() do { up(&rtnl_sem); \
if (rtnl && rtnl->sk_receive_queue.qlen) \
rtnl->sk_data_ready(rtnl, 0); \
} while(0)
/* RTNL is used as a global lock for all changes to network configuration */
extern void rtnl_lock(void);
extern int rtnl_lock_interruptible(void);
extern void rtnl_unlock(void);
extern int rtnl_trylock(void);
extern void rtnetlink_init(void);
extern void __rtnl_unlock(void);
#define ASSERT_RTNL() do { \
if (unlikely(down_trylock(&rtnl_sem) == 0)) { \
up(&rtnl_sem); \
if (unlikely(rtnl_trylock())) { \
rtnl_unlock(); \
printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
__FILE__, __LINE__); \
dump_stack(); \